There are ways we can hit them back ya know <img src="/forums/images/graemlins/wink.gif" alt="" /> Just kidding - them days are over now... <img src="/forums/images/graemlins/grin.gif" alt="" />
One of those ways is getting the ski patrol to clip their ticket. I've read a few stories about boarders running into people then taking off. In one instance the boarder was met at the lift line by a couple of large friends of the victim. They turned him in and he was done for the season at that resort.